Answer:
2Na + MgF₂ → 2NaF + Mg
Explanation:
Chemical equation:
Na + MgF₂ → NaF + Mg
Chemical equation:
2Na + MgF₂ → 2NaF + Mg
The given reaction follow the law of conservation of mass because there are equal number of atoms of sodium, magnesium and fluorine are present on both side of equation.
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Type of reaction:
The given chemical reaction is type of single replacement reaction. Sodium replace the magnesium and form sodium fluoride.
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
Missing in your question: the molarity of H2SO4 M = 0.1 M
and the equivalence point (mL) = 19.31 mL = 0.019 L
So by using the molarity formula:
molarity of H2SO4 = no of moles of H2SO4 / Volume L
So by substitution:
0.1 M = no of moles of H2SO4 / 0.019 L
∴ no of moles of H2SO4 = 0.1 M * 0.019 L
= 0.0019 mol
Volume of 1 mole of any gas under STP = 22.4 L,
so
0.15 mol*22.4 L/1 mol = 3.36 L of H2
Answer:
Solid gallium is a blue-gray metal with orthorhombic crystalline structure; very pure gallium has a stunning silvery color. Gallium is solid at normal room temperatures, but as well as mercury, cesium, and rubidium it becomes liquid when heated slightly
Explanation:
gallium is like water it freezes to turn solid!
...or like Bruce lee get it?
Answer:
Temperature
Explanation:
Here the factor that Elle is controlling is the temperature. So temperature here is the independent variable and the dependent variable is the rate of evaporation of water. Independent variable is controlled during the experiment setup and the outcome of the dependent variable depends on the independent variable.